Adopting as a normative basis the principle of harmony with nature and the theory of dynamogenesis by Vladmir Oliveira da Silveira and Maria Mendez Rocasolano, this paper discusses the historical evolution of the recognition of the rights of non-human living beings, from pre-metaphysical Greece, in the works of Pythagoras, Theophrastus Peripatetic, and Porphyry, to the Platonism of Plutarch. The analysis continues through the Middle Ages and the Renaissance, exploring the doctrine of signatures, vitalism, the organicist theory, and its echoes in the American Romantic movement, as seen in the works of Emerson, Thoreau, and John Muir. It addresses the evolution of the theme in modernity, with contributions from John Locke, John Brukner, Bentham, John Lawrence, Henry S. Salt, and Edward B. Nicholson. The expansion of the ecological circle in the twentieth century is demonstrated through the research of Ernst Haeckel, Charles Elton, and Arthur G. Tansley. The thought of Albert Schweitzer and Peter D. Ouspensky in shaping Aldo Leopold’s pioneering work on the ethics of the Earth and ecocentrism is highlighted, which was further advanced by Rachel Carson in Silent Spring. This chapter concludes by emphasizing the power and originality of South American constitutionalism, inspired by the Andean philosophy of buen vivir, through the theoretical lenses of Antônio Carlos Wolkmer, Eduardo Gudynas, and Alberto Acosta.